Internal-combustion engine.



J. S. BROWN. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JUNE 19, 1911.

1,088,259, I Patented Feb. 24, 191 1 INVEN fir ATTORNEYS Syracuse, in the county of Onondaga and UNITED STATES PATENT ornicE.

JULIAN S. BROWN, OF SYRACUSE, NEW YORK.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented 1960.24, 19 14.

Application filed June 19, 1911. Serial No. 634,018.

To all whom it may concern: I

Be it known that I, JULIAN S. BROWN, of

State of New York, have invented 'a certain new and useful Internal-Combustion E11- gine, of which the following is a specification'.

My invention has for its object the 'production of a particularly simple and etlicient valve arrangement for internal combustion engines; and it consists in the combinations and constructions hereinafter set forth and claimed. i l

In describing this invention reference is had to the accompanyingdrawing which is a vertical sectional view of one. embodiment of my invention.

As will be understood by those skilled in the art, the intake valve of internal combustion engines is adequately cooled by the incoming motive fluid and does not depend entirely on the cooling medium as water or air; and the heat from the, exhaust valve and its seat is conducted through contiguous parts cooled by the cooling medium; and in order to eiiiciently cool the exhaust valve,. such valve shouldcoact with a seat formed directly on a" inner wall of the cylinderin contradistinction to av removable seat as a cage detachable from the cylinder.

In the present internal combustion engines, either both inlet and exhaust valves are supported by detachable cages in order that said valves may be easily removed, or both valves are. arranged directly in openings formed in the cylinder and coact with seating surfaces integral with the cylinder in order that the exhaust valve will receive full benefit of the cooling medium.

In locating the inlet and exhaust valves directly in openings in the cylinder. such valves have not been easily ren'iovable and replaceable as in order to remove the same it has been necessary to remove the cylinder from the crank case or remove the head of the cylinder in case the head is removable,

By my invention the exhaust valve is located in an opening formed in, and coacts with a seat formed directly on, the end wall or head of the cylinder and is removable through an additional opening in the head of the cylinder, Without removing the cylinder from the crank case or removing the head of the cylinder andparts carried thereby.

My'invention comprises, generally, a cylinder formed with an Opening in the end wall or head thereof and with a valve seat at the inner end of the opening, 'an inwardly opening exhaust valve having a head coach ing with said seat, the cylinder also having a second opening of greater diameter than the head of the valve-wherel'iy the valve is removable and replaceable through the second opening, and a removableinlet valve and valve seat closing the second opening. The inlet and exhaust -alves open inwardly in the same general direction lengthwise of the cylinder, and in the illustrated embodiment of my invention said valves are ar ranged with their 'axes'parallel to the axis of the cylinder, but obviously may be an ranged at an angle to each other as in a cylinder having a dome-shaped head.

1 is the cylinder provided with integral side and end walls and having an opening 2 in its end wall or head and a valve 3 at the inner end of the opening, the opening 2 con'iniunicating with the exhaust passage 4.

5 is an inwardly opening exhaust valve having its head coacting with the seat 3 and its stem (3 extending axially of the opening 2 and through a guide 7 for said stem; said guide being attached to the head of the 'c vlinder in any suitable manner. The head and the stem of the exhaust valve are of less coinbined length in a direction lengthwise' of their axis than the maximum distance lietween the inner face of the end wall or head of the cylinder and the opposing face of the piston of the engine, and thus thevalve may be moved, as a whole. axially into the piston chamber and then shifted laterally in said chamber. The cylinder is also formed with an opening 8 in the head thereof, the opening being of greater diameter than the opening 2 and the exhaust valve. 9 is a removable valve seat as a cage arranged in said opening 8 and secured to the cylinder by any suitable means. The cage is formed with a and 19 on their stems 6 and 13, and the guides 7 and '14-, the spring 16 holding the guide 7 inposition. The valves may be operated in any suitable manner as by rock arms 20 and 21, and the valve stems 6 and 13 are separable from the shoulders 18 and 19 and the rock arms 20 and 21.

The cage 9 is held in position by a plug 15 threading in the upper end of the opening 8, and having a central non-circular opening for receiving a tool or Wrench.

The valves 5 and 12 are preferably interchangeable that is, of the same size, and in placing the valves in position after the cylinder has been mounted on th crank ease, the exhaust valve is first passed through the opening 8 and moved laterally overopposite to the opening 2, or in such position relatively to such opening, that the stem 6 of such valve can be engaged by the hand or a suitable tool, and the valve is then drawn up against its seat 3 and the guide '7, and the other parts placed in position. The cage 9 with the valve 12 and parts assembled there:

in is then secured in position in the opening 8. In removing the valves the reverse of such operation takes place, it being of course necessary to turn the crank shaft of the engine until the out stroke.

Although I have shown but one valve re-' movable through an enlarged opening in the cylinder, as the opening for the valve cage, obviously if the cylinder is provided with additional valves they may be removable through such opening.

What I claim is:

piston is near the end of its --l. In an internal combustion engine, a.

hauet valve, a-removable casing mounted in i the second opening, and a valve substantially (mrresponding to the exhaust valve seating upon the casing and removable therewith through the second opening, the exhaust valve, as a whole, being of less length in a direction lengthwise of its axis than the maximum distance between the inner face of said end wall and the opposing face of the piston of the engine and being movable inwardly from its scat into the piston chamber, then laterally in the piston chamber into registration with the second opening, and finally outwardly from said chamber through the second opening when the casing is removed, substantially as and for the purpose described.

2. In an internal combustion engine, a cylinder including an end wall integral with the side walls of the cylinder and having an opening therethrough extending in a direction substantially parallel to the axis of the cylinder, a removable casing mounted in the opening, an inlet valve seating on the casing and removable therewith from the cylinder, a second opening in the end wall located to one side of, and extending substantially parallel with, the first opening, and of less diameter than the same, an exhaust valve having a head seating directly on the end wall at the inner end of the second opening, and non-removable therethrough from the cylinder, and of less diameter than the first opening, said valve being provided with a stem, the valve head and the stem being of less combined length in a direction lengthwise oi: their axis than the maximum distance be tween the inner face of said end .wall and the opposing face of the piston of the engine. whereby the valve may be moved axially into the piston chamber, then laterally in. the chamber for alining the valve with the first-named opening and finally axially in the reverse direction through the lirst-named o 'iening after the removal of the casing therefrom, substantially as and for the purpose specified.

In testimony whereof, I- have hereunto signed my name in the presence of two attesting witnesses, at Syracuse, in the county of Onondaga. in the State of New York, this 15th day of June, 1.911.

JULIAN S. BROlVN.

\Vitnesses S. I)AVIS, L. M. DAVIS. 

